[SPARK-1237] Implicit ALS is not efficient in computing YtY - ASF JIRA

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Details

Type: Improvement
Status: Resolved
Priority: Major
Resolution: Fixed
Affects Version/s: None
Fix Version/s: 0.9.1, 1.0.0
Component/s: MLlib
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Description

Computing YtY can be implemented using BLAS's DSPR operations instead of generating y_i y_i^T and then combining them.

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Assignee:: Xiangrui Meng

Reporter:: Xiangrui Meng

Votes:: 0 Vote for this issue

Watchers:: 1 Start watching this issue

Dates

Created:: 12/Mar/14 18:01

Updated:: 18/Mar/14 19:21

Resolved:: 13/Mar/14 00:45

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